US20050090615A1 - Hot melt pressure sensitive adhesive composition for attaching roofing membranes - Google Patents
Hot melt pressure sensitive adhesive composition for attaching roofing membranes Download PDFInfo
- Publication number
- US20050090615A1 US20050090615A1 US10/935,142 US93514204A US2005090615A1 US 20050090615 A1 US20050090615 A1 US 20050090615A1 US 93514204 A US93514204 A US 93514204A US 2005090615 A1 US2005090615 A1 US 2005090615A1
- Authority
- US
- United States
- Prior art keywords
- styrene
- adhesive composition
- ethylene
- esters
- article
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 239000000203 mixture Substances 0.000 title claims abstract description 144
- 239000004820 Pressure-sensitive adhesive Substances 0.000 title claims abstract description 8
- 239000012943 hotmelt Substances 0.000 title claims 4
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- 229910052882 wollastonite Inorganic materials 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C09J123/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C09J123/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J153/00—Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
- C08L2666/04—Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2852—Adhesive compositions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2852—Adhesive compositions
- Y10T428/2878—Adhesive compositions including addition polymer from unsaturated monomer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2852—Adhesive compositions
- Y10T428/2878—Adhesive compositions including addition polymer from unsaturated monomer
- Y10T428/2883—Adhesive compositions including addition polymer from unsaturated monomer including addition polymer of diene monomer [e.g., SBR, SIS, etc.]
Definitions
- the present invention relates to an adhesive composition that is useful to attach roofing membranes or underlayments to a roof area. Specifically, the present invention relates to an adhesive composition that is pressure sensitive and may be utilized to apply a roofing membrane in a peel and stick manner. Additionally, the present invention relates to a roofing membrane or underlayment having the adhesive composition of the present invention applied to at least one major face.
- Roof sheeting materials such as ethylene-propylene-diene terpolymer (EPDM), butyl rubber, neoprene, polyvinyl chloride, chlorinated polyethylene, thermoplastic polyolefin (TPO) and modified bitumen and the like are often used as single-ply roofing membranes or underlayments because they are well known in the art as having barrier properties against moisture.
- the roof sheeting materials are customarily attached to the roof area using an adhesive.
- the roof sheeting materials may be exposed to stresses such as roof movement, heavy winds, freeze-thaw cycles and thermal cycles. Therefore, the adhesive must be able to withstand such possible stresses.
- liquid based adhesives that employ natural and/or synthetic elastomers and resins in organic solvent systems.
- These liquid based adhesives do not always provide good bond strength and long-term durability. For example, if conditions during application are windy, dust or other debris may adhere to the adhesive and impair the quality of the bond. High temperatures may cause the adhesive to dry out too quickly. These environmental problems may complicate installation procedures. Additionally, liquid based adhesives often utilize organic solvents such as toluene and xylene. These solvents pose a health and fire hazard, and their use is undesirable.
- roofing membranes Other methods of adhering roofing membranes include the use of slow drying water based adhesives. Additionally, asphalt based adhesives that must be heated to a molten state and then swabbed onto the roofing surface may also be used. However, these asphalt adhesives require special equipment and can pose a fire risk. Heat welding of thermoplastic materials and nailing have also been utilized to secure roofing membranes or underlayments to roof decks or insulation boards. Cover strips, flashings or other accessories have also been secured utilizing these processes. These processes may be extremely time consuming, hazardous or provide an inferior seam.
- the adhesive should provide high bond strength and excellent long-term heat aging, weathering resistance and low temperature properties while providing a moisture proof seam. Additionally, the adhesive should pose no environmental hazard.
- Embodiments of the present invention meet those needs by providing an adhesive composition for roofing membranes.
- the adhesive composition may be applied in a peel and stick manner, and poses no environmental hazard.
- the adhesive composition includes a) a rubbery polymer comprising a blend of i) a thermoplastic block copolymer selected from the group consisting of styrene-butadiene-styrene, styrene-isoprene-styrene, styrene-ethylene-butylene-styrene, styrene-ethylene-propylene-styrene, styrene-ethylene-propylene, ethylene-propylene and combinations thereof and ii) a paraffinic hydrocarbon polymer; b) a compatible tackifier; and c) an amorphous polyolefin.
- a rubbery polymer comprising a blend of i) a thermoplastic block copolymer selected from the group consisting of styrene-butadiene-styrene, styrene-isoprene-styrene, styrene-ethylene
- the paraffinic hydrocarbon polymer preferably comprises polyisobutylene.
- the compatible tackifier is preferably selected from the group consisting of hydrogenated polyalicyclic resins, aliphatic hydrocarbon resins, aromatic hydrocarbon resins, coumarone indene resins, esters of hydrogenated rosins, acrylic resins, and combinations thereof.
- the amorphous polyolefin is preferably selected from the group consisting of amorphous polypropylene-ethylene copolymers, amorphous polypropylene/polypropylene-ethylene copolymers, amorphous polypropylene homopolymers, amorphous polyethylene homopolymers, and combinations thereof.
- the adhesive composition preferably further comprises a compatible plasticizer.
- the plasticizer is preferably selected from the group consisting of polybutene, chlorinated paraffins, adipate esters, phthalate esters, epoxized esters, oleate esters, phosphate esters, sebacate esters, stearate esters, aromatic process oils, naphthenic process oils, paraffinic process oils, and combinations thereof.
- the adhesive composition may optionally contain additional components such as antioxidants, reinforcing agents, pigments, flame retardants, and fillers.
- the adhesive composition includes a) a rubbery polymer comprising a blend of i) from about 20% or less by weight of the total composition of a thermoplastic block copolymer selected from the group consisting of styrene-butadiene-styrene, styrene-isoprene-styrene, styrene-ethylene-butylene-styrene, styrene-ethylene-propylene-styrene, styrene-ethylene/propylene, ethylene-propylene, and combinations thereof and ii) from about 13% or less by weight of the total composition of a paraffinic hydrocarbon polymer; b) a compatible tackifier; and c) a compatible plasticizer.
- a paraffinic hydrocarbon polymer selected from the group consisting of styrene-butadiene-styrene, styrene-isoprene-styrene, s
- the thermoplastic block copolymer may comprise about 10-15% by weight of the total adhesive composition, and the paraffinic hydrocarbon polymer may comprise about 1-8% by weight of the total adhesive composition.
- the adhesive composition exhibits 180° peel strength at room temperature of at least 254 grams/in (100 g/cm) when adhered to a substrate, and the adhesive composition supports a static load of at least 50 grams/in 2 (8 g/cm 2 ) at 70° C. for at least 96 hours when adhered to a substrate.
- an adhesive roofing article having a composition for adhering the roofing article to a roof area.
- the roofing article has first and second major surfaces.
- the adhesive composition is applied to the first major surface, and the adhesive composition includes a) a rubbery polymer comprising a blend of i) a thermoplastic block copolymer selected from the group consisting of styrene-butadiene-styrene, styrene-isoprene-styrene, styrene-ethylene-butylene-styrene, styrene-ethylene-propylene-styrene, styrene-ethylene-propylene, ethylene-propylene, and combinations thereof and ii) a paraffinic hydrocarbon polymer; and b) a compatible tackifier.
- the roofing article may have a release liner adhered to the adhesive composition.
- the adhesive composition of the roofing article comprises less than 20% of the total adhesive composition by weight of the block copolymer and less than 13% of the total adhesive composition by weight of the paraffinic hydrocarbon polymer.
- the thermoplastic block copolymer comprises about 10-15% by weight of the total adhesive composition
- the paraffinic hydrocarbon polymer comprises about 1-8% by weight of the total adhesive composition.
- the adhesive composition exhibits 180° peel strength at room temperature of at least 254 grams/in (100 g/cm) when adhered to a substrate, and the adhesive composition supports a static load of at least 50 grams/in 2 (8 g/cm 2 ) at 70° C. for at least 96 hours when adhered to a substrate.
- Embodiments of the present invention provide an adhesive composition with excellent tack and quick stick properties.
- the adhesive resists extreme heat and cold.
- the adhesive may be used with a roofing article such as EPDM rubber or TPO to provide a watertight seal.
- the adhesive may be used in a variety of weather conditions, and no special equipment is required. Additionally, the adhesive poses no environmental hazard and does not require hazardous solvents.
- the embodiments of the present invention provide an adhesive composition for use in adhering together sheets of roofing materials which provides ease of application, good strength, and a long term water tight seal.
- Embodiments of the present invention provide a pressure sensitive adhesive composition for roofing sheets and an adhesive roofing article comprising a roofing article and an adhesive composition.
- the adhesive composition allows roofing sheets to be applied in a peel and stick manner while providing good long term heat aging, weathering resistance and low temperature properties.
- the adhesive composition preferably comprises a rubbery polymer comprising a blend of a thermoplastic block copolymer and a paraffinic hydrocarbon polymer such as polyisobutylene.
- the block copolymer may be a polymer of styrene-butadiene-styrene type such as Kraton D1101, D1102, D1116, D1118, D1122, D1184 or D1300, all available from Kraton polymers; or Calprene C-401, C-411, C-411X, C-412, C-416, 419, 484, 485, 487, 500 or 501, commercial products available from Dynasol Elastomers; and VectorTM 2411, 2518, 4461, 6241 or 8505, commercially available from ExxonMobil Chemical Company.
- the block copolymer may be a polymer of a styrene-isoprene-styrene type such as Kraton D1107, D1111, D1112, D1113, D1117, D1119, D1124, D1125, D1193 or D1320, commercial products available from Kraton Polymers; KTR-801 or KTR-802, available from Momentum Technologies; or VectorTM 4111, 4113, 4114, 4211, 4213, 4230, or 4411, commercially available from ExxonMobil Chemical Company.
- a styrene-isoprene-styrene type such as Kraton D1107, D1111, D1112, D1113, D1117, D1119, D1124, D1125, D1193 or D1320, commercial products available from Kraton Polymers; KTR-801 or KTR-802, available from Momentum Technologies; or VectorTM 4111, 4113, 4114, 4211, 4213, 4230, or 44
- the block copolymer may be polymer of a styrene-ethylene-butylene-styrene type such as Kraton G1650, G1651, G1652, G1654, G1657, G1726, G7723 or GRP6919, commercial products available from Kraton Polymers; or Calprene H-6110, 6120, 6140 or 6170, all available from Dynasol Elastomers; or S8004, S8006, S8007 or S8104, commercially available from Septon Company of America.
- a styrene-ethylene-butylene-styrene type such as Kraton G1650, G1651, G1652, G1654, G1657, G1726, G7723 or GRP6919, commercial products available from Kraton Polymers; or Calprene H-6110, 6120, 6140 or 6170, all available from Dynasol Elastomers; or S8004, S8006, S8007 or S8104, commercially available from Septon Company of America.
- the block copolymer may be a polymer of a styrene-ethylene-propylene-styrene type such as S2002, S2004, S2005, S2006, S2007, S2063, or S2104, commercially available from Septon Company of America.
- the block copolymer may also be a polymer of a styrene-ethylene-propylene type such as Kraton G1701 or G1702, commercial products available from Kraton Polymers; or S1001, commercially available from Septon Company of America.
- the block copolymer may be a polymer of an ethylene-propylene type such as Kraton G1750 or G1765, commercial products available from Kraton Polymers.
- styrene-based block copolymers include SeptonTM grades S4030, S4033, S4044, S4055 and S4077, commercially available from Septon Company of America. Additionally, the block copolymer component may be a combination of such copolymers. Generally, the adhesive composition will include less than about 20% by weight of the block copolymer. Typically, the adhesive composition will contain about 10-15% by weight of the block copolymer.
- the paraffinic hydrocarbon polymer of the present adhesive composition may be a high molecular weight polyisobutylene such as Vistanex L-80, L-100, L-120 or L-140, commercial products available from ExxonMobil Chemical; or Oppanol B-50 or B-100, available from BASF Corporation.
- the paraffinic hydrocarbon polymer may also be a low molecular weight polyisobutylene such as CP-24, LM-MS, LM-MH, LM-H or LM-S, all available from ExxonMobil Chemical; or Opponol B-10 or B-15, commercial products available from BASF corporation; or P-12 or P-15, products available from Alcan Rubber and Chemical; or 4.0H, 4.5H, 5.0H, 5.5H or 6HT, commercial products available from Rit-Chem. Additionally, the paraffinic hydrocarbon component may be a combination of such polyisobutylenes. Generally, the paraffinic hydrocarbon component comprises less than 13% by weight of the adhesive composition. Typically, the paraffinic hydrocarbon component comprises about 1 to 8% by weight of the adhesive composition.
- the adhesive composition generally contains a compatible tackifier that is generally a tackifying resin.
- the tackifying resin gives the composition its softness and high initial adhesivity.
- the resin may be a hydrogenated polyalicyclic resin such as P-95, P-115, P-125 or P-140, commercial products available from Arakawa Chemical; or Escorez 5380, 5300, 5320 or 5340, commercial products available from ExxonMobil Chemical; or Regalite R91, R101, R125 or S260 or Regalrez 1018, 1085, 1094, 1126, 1128, 1139, 3102, 5095 or 6108, products available from Hercules; or Eastotac H-100W, H-115W or H-130W, all available from Eastman Chemical; or Sukorez SU-100, SU-110, SU-120 or SU-130, commercial products available from Kolon Chemical.
- the resin may also be an aliphatic hydrocarbon resin such as Escorez 1102, 1304, 1310LC, 1315 or 1504, commercial products available from ExxonMobil Chemical; or Nevtac 10, 80, 100 or 115, products available from Neville Chemical; or Wingtack 10, 95 or Plus, all available from Goodyear Tire & Rubber; or Eastotac H-100E, H-100R, H-100L, H-115E, H-115L, H-130E, H-130R or H-130L, commercial products available from Eastman Chemical; or Adtac LV, Piccopale 100, Piccotac B, Piccotac 95 or Piccotac 115, products available from Hercules; or Hirkorez A-I 100, A-1100S, C-1100, R-1100, R-1100S or T1080, all commercial products available from Kolon Chemical; or Norsolene A90, A100 or A110, all commercially available from Sartomer; or ADHM-100, a product available from Poly
- the resin may be an aromatic hydrocarbon resin such as Nevchem 70, 100, 110, 120, 130, 140 or 150, products available from Neville Chemical; or Norsolene S85, S95, S105, S115, S125, S135, S145, S155, W90, W100 or W 110, all commercially available from Sartomer; or Escorez 7105 or 7312, commercial products available from ExxonMobil Chemical; or Hikotack P-90, P-90S, P-110S, P-120, P-120S, P-120HS, P-140, P-140M, P-150 or P-160, all commercial products available from Kolon Chemical; or Picco 1104, 2100, 5120, 5130, 5140, 6085, 6100, 6115 or 9140, or Piccodiene 2215 or Piccovar AP10, AP25 or L60, products available from Hercules.
- Nevchem 70 100, 110, 120, 130, 140 or 150
- the resin may also be a coumarone indene resin such as Cumar FN-10-112, P-10, P-25, R-1, R-3, R-5, R-6, R-7, R-9, R-10, R-11, R-12, R-13, R-14, R-15, R-16, R-17, R-19, R-21, R-27, R-28, R-29 or LX-509, all commercial products available from Neville Chemcial; or Natrorez 10 or 25, products available from Natrochem.
- a coumarone indene resin such as Cumar FN-10-112, P-10, P-25, R-1, R-3, R-5, R-6, R-7, R-9, R-10, R-11, R-12, R-13, R-14, R-15, R-16, R-17, R-19, R-21, R-27, R-28, R-29 or LX-509, all commercial products available from Neville Chemcial; or Natrorez 10 or 25, products available from Natrochem.
- the resin may be an ester of hydrogenated rosin such as Foral 85 or 105 or Pentalyn A or H or Hercolyn D or Stabelite Ester 10 or Abalyn, commercial products available from Hercules; or Komotac KF-462S, a product available from Momentum Technologies.
- the resin may also be acrylic, such as Acronol 4F, 7F, 30F, 80F, 81F, 85F, 500F, 880F and LR8820, commercially available from BASF Corporation; or Acryloid (Paraloid®) A-11, A-12, A-21, B-44, B-48N, B-60, B-64, B-66, B-72 and B-82, commercially available from Rohm & Haas.
- the tackifying resin component of the present invention may be mixtures of these or other suitable resins.
- the tackifying resin generally comprises less than about 40% by weight and more than about 14% by weight of the adhesive composition.
- the pressure sensitive adhesive composition may also contain an amorphous polyolefin.
- the amorphous polyolefin is a flow modifier.
- the amorphous polyolefin may be amorphous polypropylene-ethylene copolymers such as E1003, E1060 or E100, commercial products available from Eastman Chemical.
- the amorphous polyolefin may also be an amorphous polypropylene/polypropylene-ethylene copolymer such as M1010, M1018, M1020, M1025 or M1030, commercial products available from Eastman Chemical.
- the amorphous polyolefin may be an amorphous polypropylene homopolymer such as P1010 or P1023, commercial products available from Eastman Chemical; or Polytac R-500, a commercial product available from Crowley Chemical.
- the amorphous polyolefin may be an amorphous polyethylene homopolymer such as Epolene C-10, C-13, C-14, C-15, C-17, N-10, N-11, N-14, N-15, N-20, N-21 0 and N-34, commercial products available from Eastman Chemical; or AC-6, AC-7, AC-8, AC-9, AC-617, AC-712, AC-715, AC-725, AC-735 or AC-1702, commercial products available from Honeywell.
- the amorphous polyolefin may be an ethylene/vinyl acetate copolymer such as Elvax 40-W, 140-W, 150-W, 205-W, 210-W, 220-W, 240-W, 250-W, 260, 265, 310, 350, 360, 410, 420, 450, 460, 470, 550, 560, 650, 660, 670, 750, 760 or 770, commercial products available from DuPont. Additionally, the amorphous polyolefin may comprise mixtures of the above types. Generally, the amorphous polyolefin comprises about 0-50% by weight of the adhesive composition.
- the adhesive composition may contain a compatible plasticizer.
- the plasticizer may also function as a tackifier and give the composition its softness and high initial adhesivity.
- the plasticizer may also impart flame retardancy.
- suitable plasticizing agents include polybutene such as Indopol H-100, H-300, H-1500 or H-1900, commercial products available from Amoco Chemical; or Parpol 700, 950, 1300, 2200 or 2500, commercial products available from ExxonMobil Chemical; and chlorinated paraffin such as Chlorowax LV, 40, 41 SW, 50, 45, 45-LV, 50-LV, 100, S-45, S-52, 500-C, 57-60, 60-70, or 70-200, commercial products available from Oxychem; and adipate esters such as Dioctyl Adipate (DOA) and Diisodecyl Adipate (DIDA); and phthalate esters such as Alkyl Benzyl Phthalate (DBP), Diethyl Ph
- the adhesive composition may also contain an antioxidant.
- Suitable antioxidants include, but are not limited to, Irganox 1010, 1035, 1076, 1520, or 3114, commercial products available from Ciba-Geigy; BNX-1010, BNX-2000, or BNX-3114, commercial products available from Mayzo, Inc.; or Wingstay C, K, L, S or T, commercial products available from Goodyear Tire & Rubber; or combinations thereof.
- the adhesive composition may also contain a reinforcing agent.
- the reinforcing agent may be a hydrophilic fumed silica such as Aerosil 90, 130, 150, 200, 300 or 380, commercial products available from Degussa; or Cab-O-Sil H-5, HS-5, L-90, LM-130, LM-150, M-5, PTG, MS-55 or EH-5, commercial products available from Cabot.
- the reinforcing agent may comprise hydrophobic fumed silica such as Aerosil R202, R805, R812, R812S, R972, R974 or US202, commercial products available from Degussa; or Cab-O-Sil TS-530, TS-610 or TS-720, all commercial products available from Cabot.
- the reinforcing agent may be a hydrated amorphous precipitated silica such as Hi-Sil 132, 135, 210, 233, 243LD, 255, 532EP, 752, 900, 915 or 2000 from PPG Industries; or Hubersil162, 162LR, 1612, 1633, 1714, 1743, 4151H, all commercial products available from J. M. Huber; or Garamite 1958 available from Southern Clay Products. Additionally, the reinforcing agent may be a combination of the reinforcing agents above.
- the adhesive composition may also include fillers such as, but not limited to, aluminum silicate, barium sulfate, calcium carbonate, calcium sulfate, cellulose fiber, glass microspheres (solid), hollow microspheres, hydrous aluminum silicate (clay), hydrated magnesium silicate talc, metallic oxide silica, ground mica, powdered coal, peanut shell flour, wollastonite and wood flour.
- fillers such as, but not limited to, aluminum silicate, barium sulfate, calcium carbonate, calcium sulfate, cellulose fiber, glass microspheres (solid), hollow microspheres, hydrous aluminum silicate (clay), hydrated magnesium silicate talc, metallic oxide silica, ground mica, powdered coal, peanut shell flour, wollastonite and wood flour.
- the adhesive composition may contain a minor portion of pigments.
- the pigments may include titanium dioxide to make the product white or light in color or carbon black or coal filler to make the product black or dark in color and mixtures thereof.
- the adhesive composition may further include antimony oxide or decabromodiphenyl oxide such as Saytex 102E, a commercial product available from Albemarle; or tetradecabromodiphenoxybenzene such as Saytex 120 from Albermarle; or hexabromocyclododecane such as Saytex HP-900 available from Albermarle; or ethane-1,2-bis(pentabromophenyl) such as Saytex 8010, a commercial product available from Albermarle; or ethylenebistetrabromophthalimide such as Saytex BT-93 from Albermarle; and mixtures thereof to provide flame retardancy.
- antimony oxide or decabromodiphenyl oxide such as Saytex 102E, a commercial product available from Albemarle; or tetradecabromodiphenoxybenzene such as Saytex 120 from Albermarle; or hexabromocyclododecane such as Saytex HP-900 available from Albermarle; or
- the ingredients of the pressure sensitive adhesive composition are generally prepared by mixing the components together in a conventional double-arm sigma blade mixer at a temperature of about 150° C. to about 205° C. until a homogenous mixture is obtained. The mixing time is generally about four hours.
- the resulting PSA composition exhibits a 180° peel strength at room temperature of at least 445 grams per inch (g/in) (175 g/cm) when adhered to plywood, 254 g/in (100 g/cm) when adhered to wood fiber board, and 254 g/in (100 g/cm) when adhered to paper faced isocyanurate insulation board as measured by the ASTM D 3330 test method.
- the adhesive compositions exhibit a 180° peel strength at room temperature of about 2268 g/in (893 g/cm) on aluminum, 2721 g/in (1071 g/cm) on concrete, 1814 g/in (714 g/cm) on plywood, 1814 g/in (714 g/cm) on wood fiberboard, 907 g/in (357 g/cm) on oriented strand board, 453 g/in (178 g/cm) on paper faced isocyanurate inusulation board, and 1814 g/in (714 g/cm) on foil faced isocyanurate insulation board.
- compositions support a static load of at least 50 grams/in 2 (8 g/cm 2 ) at 70° C. for a minimum of 96 hours when bonded to any desired substrate.
- the adhesive is suitable for use at temperatures between about ⁇ 40° C. to 122° C.
- the adhesive compositions do not require the use of organic solvents, and the adhesives pose no environmental hazard. Additionally, the adhesive resists water exposure. These properties make the adhesive compositions useful for bonding roofing materials that are subject to extreme heat, cold, and water exposure. Generally, the surface to which the adhesive compositions are to be applied should be clean, dry, free of loose or foreign materials, and free of surface contaminants such as grease or oil.
- An embodiment of the present invention also includes a roofing article incorporating the adhesive composition.
- the adhesive is hot applied to the desired substrate using any conventional means such as roll, slot die, spray, metering rod or extrusion coating.
- the adhesive is typically hot applied to the substrate at a temperature between about 175° C. to 205° C.
- a roofing article comprises films, tapes, sheets and the like that are generally used to form roofing membranes or underlayments.
- the roofing article may be comprised of materials that are used in the commercial and residential roofing industry as waterproofing membranes or underlayments. Such materials include, but are not limited to, EPDM rubber, thermoplastic polyolefin (TPO), or reprocessed tire treads.
- the roofing membrane or underlayment is single-ply.
- the adhesive is applied to the roofing article on at least one major face of the substrate.
- a release liner may be placed over the adhesive. The release liner is removed at the jobsite immediately prior to the application of the roofing article to the roof area.
- the roofing article is then placed in the desired position and minimal pressure is applied to facilitate adhesion of the roofing article to the roof area.
- the adhesive provides an immediate bond that resists weathering and heat aging. No special equipment is required during installation of the roofing article.
- compositions and amounts listed below were charged to a conventional double-arm sigma blade mixer and blended for a period of four hours. The resulting compositions were then hot applied to an underlayment or roofing material at a temperature of between 175° C. to 205° C. The resulting compositions had high initial adhesivity and excellent tack. The compositions were measured to resist a dead load of 50 g at 700° C. for 96 hours. Pass indicates that there was no slippage.
- composition 4 in Example 1 The peel strength of composition 4 in Example 1 was measured. The peel strength was measured after 24 hours at room temperature. The adhesive was applied to 45 mm thick TPO sheet membrane and a 35 mils thick roofing underlayment. The membranes were 2.54 cm wide (1 in) wide and about 30.5 cm (12 in) long. The 180° peel strength was measured for various substrates as reported below. The tape was pulled at a rate of 5 cm (2 in) per minute.
- peel strength - g/in TPO sheet Roof membrane Underlayment Composition 1 Substrate Plywood 1225 1270 Rough oriented strand board (OSB) 544 317 Smooth OSB 408 907 Wood Fiber Board 227 227 Foil Faced Isocyanurate 725 1180 Composition 2 Plywood 408 454 Rough oriented strand board (OSB) 181 317 Smooth OSB 227 318 Wood Fiber Board 272 907 Foil Faced Isocyanurate 998 1270
- compositions and amounts listed below were prepared and applied as in Example 1.
- Grams 1 2 3 Compound Description Block Copolymer 130 200 140 Calcium carbonate 550 — 600 Hydrous aluminum — 400 — silicate Amorphous Polyolefin — 50 — Tackifiers 487 490 490 Plasticizer 970 900 1200 Antioxidant 6 7 7 Reinforcing Agent — 5 — Pigment 2 2 2 Physical Properties Dead Load 50 g on Pass Fail Pass Plywood
- peel strength of all compositions was then measured as in Example 1.
- the adhesive was applied to a 35 mils thick roofing underlayment. Peel Strength - g/in - Roof Underlayment Composition Composition Composition Composition Substrate 1 2 3 Plywood 1769 181 499 Rough oriented strand board 1043 181 499 (OSB) Smooth OSB 1360 227 635 Wood Fiberboard 680 136 363 Foil Faced Isocyanurate 1406 272 816
Abstract
Description
- This application is a continuation-in-part of U.S. application Ser. No. 10/120,751, filed Apr. 11, 2002.
- The present invention relates to an adhesive composition that is useful to attach roofing membranes or underlayments to a roof area. Specifically, the present invention relates to an adhesive composition that is pressure sensitive and may be utilized to apply a roofing membrane in a peel and stick manner. Additionally, the present invention relates to a roofing membrane or underlayment having the adhesive composition of the present invention applied to at least one major face.
- Roof sheeting materials such as ethylene-propylene-diene terpolymer (EPDM), butyl rubber, neoprene, polyvinyl chloride, chlorinated polyethylene, thermoplastic polyolefin (TPO) and modified bitumen and the like are often used as single-ply roofing membranes or underlayments because they are well known in the art as having barrier properties against moisture. The roof sheeting materials are customarily attached to the roof area using an adhesive. The roof sheeting materials may be exposed to stresses such as roof movement, heavy winds, freeze-thaw cycles and thermal cycles. Therefore, the adhesive must be able to withstand such possible stresses.
- Currently, roofing membranes and underlayments are adhered to roof decks or insulation boards utilizing a variety of methods. One such method involves the use of liquid based adhesives that employ natural and/or synthetic elastomers and resins in organic solvent systems. These liquid based adhesives do not always provide good bond strength and long-term durability. For example, if conditions during application are windy, dust or other debris may adhere to the adhesive and impair the quality of the bond. High temperatures may cause the adhesive to dry out too quickly. These environmental problems may complicate installation procedures. Additionally, liquid based adhesives often utilize organic solvents such as toluene and xylene. These solvents pose a health and fire hazard, and their use is undesirable.
- Other methods of adhering roofing membranes include the use of slow drying water based adhesives. Additionally, asphalt based adhesives that must be heated to a molten state and then swabbed onto the roofing surface may also be used. However, these asphalt adhesives require special equipment and can pose a fire risk. Heat welding of thermoplastic materials and nailing have also been utilized to secure roofing membranes or underlayments to roof decks or insulation boards. Cover strips, flashings or other accessories have also been secured utilizing these processes. These processes may be extremely time consuming, hazardous or provide an inferior seam.
- Thus, there is a need for an adhesive composition that effectively adheres roofing membranes or underlayments to a variety of materials with ease of application. The adhesive should provide high bond strength and excellent long-term heat aging, weathering resistance and low temperature properties while providing a moisture proof seam. Additionally, the adhesive should pose no environmental hazard.
- Embodiments of the present invention meet those needs by providing an adhesive composition for roofing membranes. The adhesive composition may be applied in a peel and stick manner, and poses no environmental hazard.
- In accordance with one embodiment, the adhesive composition includes a) a rubbery polymer comprising a blend of i) a thermoplastic block copolymer selected from the group consisting of styrene-butadiene-styrene, styrene-isoprene-styrene, styrene-ethylene-butylene-styrene, styrene-ethylene-propylene-styrene, styrene-ethylene-propylene, ethylene-propylene and combinations thereof and ii) a paraffinic hydrocarbon polymer; b) a compatible tackifier; and c) an amorphous polyolefin.
- The paraffinic hydrocarbon polymer preferably comprises polyisobutylene. The compatible tackifier is preferably selected from the group consisting of hydrogenated polyalicyclic resins, aliphatic hydrocarbon resins, aromatic hydrocarbon resins, coumarone indene resins, esters of hydrogenated rosins, acrylic resins, and combinations thereof.
- The amorphous polyolefin is preferably selected from the group consisting of amorphous polypropylene-ethylene copolymers, amorphous polypropylene/polypropylene-ethylene copolymers, amorphous polypropylene homopolymers, amorphous polyethylene homopolymers, and combinations thereof.
- The adhesive composition preferably further comprises a compatible plasticizer. The plasticizer is preferably selected from the group consisting of polybutene, chlorinated paraffins, adipate esters, phthalate esters, epoxized esters, oleate esters, phosphate esters, sebacate esters, stearate esters, aromatic process oils, naphthenic process oils, paraffinic process oils, and combinations thereof.
- The adhesive composition may optionally contain additional components such as antioxidants, reinforcing agents, pigments, flame retardants, and fillers.
- In a preferred form, the adhesive composition includes a) a rubbery polymer comprising a blend of i) from about 20% or less by weight of the total composition of a thermoplastic block copolymer selected from the group consisting of styrene-butadiene-styrene, styrene-isoprene-styrene, styrene-ethylene-butylene-styrene, styrene-ethylene-propylene-styrene, styrene-ethylene/propylene, ethylene-propylene, and combinations thereof and ii) from about 13% or less by weight of the total composition of a paraffinic hydrocarbon polymer; b) a compatible tackifier; and c) a compatible plasticizer. The thermoplastic block copolymer may comprise about 10-15% by weight of the total adhesive composition, and the paraffinic hydrocarbon polymer may comprise about 1-8% by weight of the total adhesive composition. The adhesive composition exhibits 180° peel strength at room temperature of at least 254 grams/in (100 g/cm) when adhered to a substrate, and the adhesive composition supports a static load of at least 50 grams/in2 (8 g/cm2) at 70° C. for at least 96 hours when adhered to a substrate.
- In accordance with another embodiment, an adhesive roofing article having a composition for adhering the roofing article to a roof area is provided. The roofing article has first and second major surfaces. The adhesive composition is applied to the first major surface, and the adhesive composition includes a) a rubbery polymer comprising a blend of i) a thermoplastic block copolymer selected from the group consisting of styrene-butadiene-styrene, styrene-isoprene-styrene, styrene-ethylene-butylene-styrene, styrene-ethylene-propylene-styrene, styrene-ethylene-propylene, ethylene-propylene, and combinations thereof and ii) a paraffinic hydrocarbon polymer; and b) a compatible tackifier. The roofing article may have a release liner adhered to the adhesive composition.
- The adhesive composition of the roofing article comprises less than 20% of the total adhesive composition by weight of the block copolymer and less than 13% of the total adhesive composition by weight of the paraffinic hydrocarbon polymer. In a preferred form, the thermoplastic block copolymer comprises about 10-15% by weight of the total adhesive composition, and the paraffinic hydrocarbon polymer comprises about 1-8% by weight of the total adhesive composition. The adhesive composition exhibits 180° peel strength at room temperature of at least 254 grams/in (100 g/cm) when adhered to a substrate, and the adhesive composition supports a static load of at least 50 grams/in2 (8 g/cm2) at 70° C. for at least 96 hours when adhered to a substrate.
- Embodiments of the present invention provide an adhesive composition with excellent tack and quick stick properties. The adhesive resists extreme heat and cold. Additionally, the adhesive may be used with a roofing article such as EPDM rubber or TPO to provide a watertight seal. The adhesive may be used in a variety of weather conditions, and no special equipment is required. Additionally, the adhesive poses no environmental hazard and does not require hazardous solvents.
- Accordingly, the embodiments of the present invention provide an adhesive composition for use in adhering together sheets of roofing materials which provides ease of application, good strength, and a long term water tight seal. This, and other features and advantages will become apparent from the following detailed description and the appended claims.
- Embodiments of the present invention provide a pressure sensitive adhesive composition for roofing sheets and an adhesive roofing article comprising a roofing article and an adhesive composition. The adhesive composition allows roofing sheets to be applied in a peel and stick manner while providing good long term heat aging, weathering resistance and low temperature properties.
- The adhesive composition preferably comprises a rubbery polymer comprising a blend of a thermoplastic block copolymer and a paraffinic hydrocarbon polymer such as polyisobutylene. For example, the block copolymer may be a polymer of styrene-butadiene-styrene type such as Kraton D1101, D1102, D1116, D1118, D1122, D1184 or D1300, all available from Kraton polymers; or Calprene C-401, C-411, C-411X, C-412, C-416, 419, 484, 485, 487, 500 or 501, commercial products available from Dynasol Elastomers; and Vector™ 2411, 2518, 4461, 6241 or 8505, commercially available from ExxonMobil Chemical Company. The block copolymer may be a polymer of a styrene-isoprene-styrene type such as Kraton D1107, D1111, D1112, D1113, D1117, D1119, D1124, D1125, D1193 or D1320, commercial products available from Kraton Polymers; KTR-801 or KTR-802, available from Momentum Technologies; or Vector™ 4111, 4113, 4114, 4211, 4213, 4230, or 4411, commercially available from ExxonMobil Chemical Company. The block copolymer may be polymer of a styrene-ethylene-butylene-styrene type such as Kraton G1650, G1651, G1652, G1654, G1657, G1726, G7723 or GRP6919, commercial products available from Kraton Polymers; or Calprene H-6110, 6120, 6140 or 6170, all available from Dynasol Elastomers; or S8004, S8006, S8007 or S8104, commercially available from Septon Company of America. The block copolymer may be a polymer of a styrene-ethylene-propylene-styrene type such as S2002, S2004, S2005, S2006, S2007, S2063, or S2104, commercially available from Septon Company of America. The block copolymer may also be a polymer of a styrene-ethylene-propylene type such as Kraton G1701 or G1702, commercial products available from Kraton Polymers; or S1001, commercially available from Septon Company of America. The block copolymer may be a polymer of an ethylene-propylene type such as Kraton G1750 or G1765, commercial products available from Kraton Polymers. Other suitable styrene-based block copolymers include Septon™ grades S4030, S4033, S4044, S4055 and S4077, commercially available from Septon Company of America. Additionally, the block copolymer component may be a combination of such copolymers. Generally, the adhesive composition will include less than about 20% by weight of the block copolymer. Typically, the adhesive composition will contain about 10-15% by weight of the block copolymer.
- The paraffinic hydrocarbon polymer of the present adhesive composition may be a high molecular weight polyisobutylene such as Vistanex L-80, L-100, L-120 or L-140, commercial products available from ExxonMobil Chemical; or Oppanol B-50 or B-100, available from BASF Corporation. The paraffinic hydrocarbon polymer may also be a low molecular weight polyisobutylene such as CP-24, LM-MS, LM-MH, LM-H or LM-S, all available from ExxonMobil Chemical; or Opponol B-10 or B-15, commercial products available from BASF corporation; or P-12 or P-15, products available from Alcan Rubber and Chemical; or 4.0H, 4.5H, 5.0H, 5.5H or 6HT, commercial products available from Rit-Chem. Additionally, the paraffinic hydrocarbon component may be a combination of such polyisobutylenes. Generally, the paraffinic hydrocarbon component comprises less than 13% by weight of the adhesive composition. Typically, the paraffinic hydrocarbon component comprises about 1 to 8% by weight of the adhesive composition.
- The adhesive composition generally contains a compatible tackifier that is generally a tackifying resin. The tackifying resin gives the composition its softness and high initial adhesivity. The resin may be a hydrogenated polyalicyclic resin such as P-95, P-115, P-125 or P-140, commercial products available from Arakawa Chemical; or Escorez 5380, 5300, 5320 or 5340, commercial products available from ExxonMobil Chemical; or Regalite R91, R101, R125 or S260 or Regalrez 1018, 1085, 1094, 1126, 1128, 1139, 3102, 5095 or 6108, products available from Hercules; or Eastotac H-100W, H-115W or H-130W, all available from Eastman Chemical; or Sukorez SU-100, SU-110, SU-120 or SU-130, commercial products available from Kolon Chemical. The resin may also be an aliphatic hydrocarbon resin such as Escorez 1102, 1304, 1310LC, 1315 or 1504, commercial products available from ExxonMobil Chemical; or Nevtac 10, 80, 100 or 115, products available from Neville Chemical; or Wingtack 10, 95 or Plus, all available from Goodyear Tire & Rubber; or Eastotac H-100E, H-100R, H-100L, H-115E, H-115L, H-130E, H-130R or H-130L, commercial products available from Eastman Chemical; or Adtac LV, Piccopale 100, Piccotac B, Piccotac 95 or Piccotac 115, products available from Hercules; or Hirkorez A-I 100, A-1100S, C-1100, R-1100, R-1100S or T1080, all commercial products available from Kolon Chemical; or Norsolene A90, A100 or A110, all commercially available from Sartomer; or ADHM-100, a product available from Polysat. The resin may be an aromatic hydrocarbon resin such as Nevchem 70, 100, 110, 120, 130, 140 or 150, products available from Neville Chemical; or Norsolene S85, S95, S105, S115, S125, S135, S145, S155, W90, W100 or W 110, all commercially available from Sartomer; or Escorez 7105 or 7312, commercial products available from ExxonMobil Chemical; or Hikotack P-90, P-90S, P-110S, P-120, P-120S, P-120HS, P-140, P-140M, P-150 or P-160, all commercial products available from Kolon Chemical; or Picco 1104, 2100, 5120, 5130, 5140, 6085, 6100, 6115 or 9140, or Piccodiene 2215 or Piccovar AP10, AP25 or L60, products available from Hercules. The resin may also be a coumarone indene resin such as Cumar FN-10-112, P-10, P-25, R-1, R-3, R-5, R-6, R-7, R-9, R-10, R-11, R-12, R-13, R-14, R-15, R-16, R-17, R-19, R-21, R-27, R-28, R-29 or LX-509, all commercial products available from Neville Chemcial; or Natrorez 10 or 25, products available from Natrochem. The resin may be an ester of hydrogenated rosin such as Foral 85 or 105 or Pentalyn A or H or Hercolyn D or Stabelite Ester 10 or Abalyn, commercial products available from Hercules; or Komotac KF-462S, a product available from Momentum Technologies. The resin may also be acrylic, such as Acronol 4F, 7F, 30F, 80F, 81F, 85F, 500F, 880F and LR8820, commercially available from BASF Corporation; or Acryloid (Paraloid®) A-11, A-12, A-21, B-44, B-48N, B-60, B-64, B-66, B-72 and B-82, commercially available from Rohm & Haas.
- Additionally, the tackifying resin component of the present invention may be mixtures of these or other suitable resins. The tackifying resin generally comprises less than about 40% by weight and more than about 14% by weight of the adhesive composition.
- The pressure sensitive adhesive composition may also contain an amorphous polyolefin. The amorphous polyolefin is a flow modifier. The amorphous polyolefin may be amorphous polypropylene-ethylene copolymers such as E1003, E1060 or E100, commercial products available from Eastman Chemical. The amorphous polyolefin may also be an amorphous polypropylene/polypropylene-ethylene copolymer such as M1010, M1018, M1020, M1025 or M1030, commercial products available from Eastman Chemical. The amorphous polyolefin may be an amorphous polypropylene homopolymer such as P1010 or P1023, commercial products available from Eastman Chemical; or Polytac R-500, a commercial product available from Crowley Chemical. The amorphous polyolefin may be an amorphous polyethylene homopolymer such as Epolene C-10, C-13, C-14, C-15, C-17, N-10, N-11, N-14, N-15, N-20, N-21 0and N-34, commercial products available from Eastman Chemical; or AC-6, AC-7, AC-8, AC-9, AC-617, AC-712, AC-715, AC-725, AC-735 or AC-1702, commercial products available from Honeywell. The amorphous polyolefin may be an ethylene/vinyl acetate copolymer such as Elvax 40-W, 140-W, 150-W, 205-W, 210-W, 220-W, 240-W, 250-W, 260, 265, 310, 350, 360, 410, 420, 450, 460, 470, 550, 560, 650, 660, 670, 750, 760 or 770, commercial products available from DuPont. Additionally, the amorphous polyolefin may comprise mixtures of the above types. Generally, the amorphous polyolefin comprises about 0-50% by weight of the adhesive composition.
- The adhesive composition may contain a compatible plasticizer. The plasticizer may also function as a tackifier and give the composition its softness and high initial adhesivity. The plasticizer may also impart flame retardancy. Examples of suitable plasticizing agents include polybutene such as Indopol H-100, H-300, H-1500 or H-1900, commercial products available from Amoco Chemical; or Parpol 700, 950, 1300, 2200 or 2500, commercial products available from ExxonMobil Chemical; and chlorinated paraffin such as Chlorowax LV, 40, 41 SW, 50, 45, 45-LV, 50-LV, 100, S-45, S-52, 500-C, 57-60, 60-70, or 70-200, commercial products available from Oxychem; and adipate esters such as Dioctyl Adipate (DOA) and Diisodecyl Adipate (DIDA); and phthalate esters such as Alkyl Benzyl Phthalate (DBP), Diethyl Phthalate (DEP), Diisodecyl Phthalate (DIDP), Dimethyl Phthalate (DMP) Dioctyl Phthalate (DOP) and Dundecyl Phthalate (DUP); and epoxidized esters such as Epoxidized Linseed Oil and Epoxidized Soy Oil; and oleate esters such as Butyl Oleate and Decyl Oleate; and phosphate esters, sebacate esters, stearate esters, and suitable process oils which include, but are not limited to, aromatic process oils such as Flexon® 340 and 391, commercially available from ExxonMobil Chemical; or Sundex® 740T, 750T, 780T, 790, 790T, 7135T, 8125 and 8600T, commercially available from Sun Oil Company; and naphthenic process oils such as Flexon® 580, 620, 641, 644, 650, 660, 676, 680, 735, 765, 766 and 785, commercially available from ExxonMobil Chemical; or Shellflex® 371, 702, 734, 2371, 3131, 3211, 3251, 3271, 3311, 3371 and 3681, commercially available from Shell Oil Chemical; or Circosol® 304, 306, 410, 450, 4240 and Sunthene® 204, 220, 255, 306, 311, 380, 410, 450, 4130 and 4240, commercially available from Sun Oil Company; and paraffinic process oils such as Flexon® 815, 845, 865, and 885, commercially available from ExxonMobil Chemical; or Shellflex® 1210, 1310, 1790, 2210, 2310, 2680, 2790, 5680 and 6371, commercially available from Shell Oil Company; or Sunpar® 107, 110, 115, 120, 130, 150, 2170, 2280, LW104, LW105, LW107, LW110 and LW120, commercially available from Sun Oil Company; and mixtures thereof. The plasticizer generally comprises less than about 50% by weight of the adhesive composition.
- The adhesive composition may also contain an antioxidant. Suitable antioxidants include, but are not limited to, Irganox 1010, 1035, 1076, 1520, or 3114, commercial products available from Ciba-Geigy; BNX-1010, BNX-2000, or BNX-3114, commercial products available from Mayzo, Inc.; or Wingstay C, K, L, S or T, commercial products available from Goodyear Tire & Rubber; or combinations thereof.
- The adhesive composition may also contain a reinforcing agent. The reinforcing agent may be a hydrophilic fumed silica such as Aerosil 90, 130, 150, 200, 300 or 380, commercial products available from Degussa; or Cab-O-Sil H-5, HS-5, L-90, LM-130, LM-150, M-5, PTG, MS-55 or EH-5, commercial products available from Cabot. The reinforcing agent may comprise hydrophobic fumed silica such as Aerosil R202, R805, R812, R812S, R972, R974 or US202, commercial products available from Degussa; or Cab-O-Sil TS-530, TS-610 or TS-720, all commercial products available from Cabot. The reinforcing agent may be a hydrated amorphous precipitated silica such as Hi-Sil 132, 135, 210, 233, 243LD, 255, 532EP, 752, 900, 915 or 2000 from PPG Industries; or Hubersil162, 162LR, 1612, 1633, 1714, 1743, 4151H, all commercial products available from J. M. Huber; or Garamite 1958 available from Southern Clay Products. Additionally, the reinforcing agent may be a combination of the reinforcing agents above.
- The adhesive composition may also include fillers such as, but not limited to, aluminum silicate, barium sulfate, calcium carbonate, calcium sulfate, cellulose fiber, glass microspheres (solid), hollow microspheres, hydrous aluminum silicate (clay), hydrated magnesium silicate talc, metallic oxide silica, ground mica, powdered coal, peanut shell flour, wollastonite and wood flour.
- The adhesive composition may contain a minor portion of pigments. The pigments may include titanium dioxide to make the product white or light in color or carbon black or coal filler to make the product black or dark in color and mixtures thereof.
- The adhesive composition may further include antimony oxide or decabromodiphenyl oxide such as Saytex 102E, a commercial product available from Albemarle; or tetradecabromodiphenoxybenzene such as Saytex 120 from Albermarle; or hexabromocyclododecane such as Saytex HP-900 available from Albermarle; or ethane-1,2-bis(pentabromophenyl) such as Saytex 8010, a commercial product available from Albermarle; or ethylenebistetrabromophthalimide such as Saytex BT-93 from Albermarle; and mixtures thereof to provide flame retardancy.
- The ingredients of the pressure sensitive adhesive composition are generally prepared by mixing the components together in a conventional double-arm sigma blade mixer at a temperature of about 150° C. to about 205° C. until a homogenous mixture is obtained. The mixing time is generally about four hours. The resulting PSA composition exhibits a 180° peel strength at room temperature of at least 445 grams per inch (g/in) (175 g/cm) when adhered to plywood, 254 g/in (100 g/cm) when adhered to wood fiber board, and 254 g/in (100 g/cm) when adhered to paper faced isocyanurate insulation board as measured by the ASTM D 3330 test method. Typically, the adhesive compositions exhibit a 180° peel strength at room temperature of about 2268 g/in (893 g/cm) on aluminum, 2721 g/in (1071 g/cm) on concrete, 1814 g/in (714 g/cm) on plywood, 1814 g/in (714 g/cm) on wood fiberboard, 907 g/in (357 g/cm) on oriented strand board, 453 g/in (178 g/cm) on paper faced isocyanurate inusulation board, and 1814 g/in (714 g/cm) on foil faced isocyanurate insulation board. The compositions support a static load of at least 50 grams/in2 (8 g/cm2) at 70° C. for a minimum of 96 hours when bonded to any desired substrate. The adhesive is suitable for use at temperatures between about −40° C. to 122° C.
- The adhesive compositions do not require the use of organic solvents, and the adhesives pose no environmental hazard. Additionally, the adhesive resists water exposure. These properties make the adhesive compositions useful for bonding roofing materials that are subject to extreme heat, cold, and water exposure. Generally, the surface to which the adhesive compositions are to be applied should be clean, dry, free of loose or foreign materials, and free of surface contaminants such as grease or oil.
- An embodiment of the present invention also includes a roofing article incorporating the adhesive composition. To form the roofing article, the adhesive is hot applied to the desired substrate using any conventional means such as roll, slot die, spray, metering rod or extrusion coating. The adhesive is typically hot applied to the substrate at a temperature between about 175° C. to 205° C. For purposes of defining and describing the present invention, it is noted that a roofing article comprises films, tapes, sheets and the like that are generally used to form roofing membranes or underlayments. The roofing article may be comprised of materials that are used in the commercial and residential roofing industry as waterproofing membranes or underlayments. Such materials include, but are not limited to, EPDM rubber, thermoplastic polyolefin (TPO), or reprocessed tire treads. Generally, the roofing membrane or underlayment is single-ply.
- The adhesive is applied to the roofing article on at least one major face of the substrate. A release liner may be placed over the adhesive. The release liner is removed at the jobsite immediately prior to the application of the roofing article to the roof area. The roofing article is then placed in the desired position and minimal pressure is applied to facilitate adhesion of the roofing article to the roof area. The adhesive provides an immediate bond that resists weathering and heat aging. No special equipment is required during installation of the roofing article.
- The compositions and amounts listed below were charged to a conventional double-arm sigma blade mixer and blended for a period of four hours. The resulting compositions were then hot applied to an underlayment or roofing material at a temperature of between 175° C. to 205° C. The resulting compositions had high initial adhesivity and excellent tack. The compositions were measured to resist a dead load of 50 g at 700° C. for 96 hours. Pass indicates that there was no slippage.
Grams 1 2 3 4 Compound Description Block Copolymer 200 200 200 200 Polyisobutylene 20 15 20 130 Amorphous Polyolefin 110 100 100 — Tackifiers 590 600 570 520 Plasticizer 625 625 625 800 Antioxidant 10 10 10 10 Reinforcing Agent 10 10 10 10 Pigment — — — 1.5 Flame Retardant 22 22 22 — Physical Properties Dead Load 50 g on Pass Pass Pass Pass EPDM Dead Load 50 g on Pass Pass Pass Pass Plywood - The peel strength of composition 4 in Example 1 was measured. The peel strength was measured after 24 hours at room temperature. The adhesive was applied to 45 mm thick TPO sheet membrane and a 35 mils thick roofing underlayment. The membranes were 2.54 cm wide (1 in) wide and about 30.5 cm (12 in) long. The 180° peel strength was measured for various substrates as reported below. The tape was pulled at a rate of 5 cm (2 in) per minute.
Peel Strength - g/in TPO sheet Roof Substrate membrane Underlayment Plywood 1814 1814 Very Rough Oriented Strand Board (OSB) 861 1224 Rough OSB 1179 1769 Smooth OSB 1451 1496 Wood Fiber Board 997 1769 Foil Faced Isocyanurate — 2041 Paper Faced Isocyanurate 340 — - The compositions and amounts listed below were prepared and applied as in Example 1.
Grams 1 2 3 4 Compound Description Block Copolymer 200 200 200 312 Polyisobutylene 30 30 130 — Amorphous Polyolefin 100 100 — — Tackifiers 520 520 520 700 Plasticizer (polybutene) — 700 — — Plasticizer (process oil) 350 — 1000 312 Antioxidant 10 10 10 11 Reinforcing Agent 10 10 10 — Pigment 1 1 1 1 Physical Properties Dead Load 50 g on Pass Pass Pass Pass Plywood Dead Load 50 g on TPO Pass Pass Pass Pass - The peel strength of all four compositions was then measured as in Example 1 and the results are shown below.
Peel Strength - g/in TPO sheet Roof membrane Underlayment Composition 1 Substrate Plywood 165 150 Rough oriented strand board (OSB) 123 108 Smooth OSB 144 125 Wood Fiber Board 110 105 Foil Faced Isocyanurate 453 363 Composition 2 Plywood 1587 1450 Rough oriented strand board (OSB) 453 272 Smooth OSB 508 323 Wood Fiber Board 318 318 Foil Faced Isocyanurate 3084 2630 Composition 3 Plywood 318 635 Rough oriented strand board (OSB) 318 227 Smooth OSB 408 408 Wood Fiber Board 363 318 Foil Faced Isocyanurate 453 318 Composition 4 Plywood 885 805 Rough oriented strand board (OSB) 490 450 Smooth OSB 743 680 Wood Fiber Board 384 365 Foil Faced Isocyanurate 453 400 - The compositions and amounts listed below were prepared and applied as in Example 1.
Grams 1 2 Compound Description Block Copolymer 200 200 Polyisobutylene 135 135 Tackifiers 525 525 Plasticizer (polybutene) 750 750 Plasticizer (dioctyl 50 100 adipate) Antioxidant 10 10 Reinforcing Agent 10 — Pigment 1 1 Physical Properties Dead Load 50 g on Pass Pass Plywood Dead Load 50 g on TPO Pass Pass - The peel strength of both compositions was then measured as in Example 1, and the results are shown below.
Peel Strength - g/in TPO sheet Roof membrane Underlayment Composition 1 Substrate Plywood 1225 1270 Rough oriented strand board (OSB) 544 317 Smooth OSB 408 907 Wood Fiber Board 227 227 Foil Faced Isocyanurate 725 1180 Composition 2 Plywood 408 454 Rough oriented strand board (OSB) 181 317 Smooth OSB 227 318 Wood Fiber Board 272 907 Foil Faced Isocyanurate 998 1270 - The compositions and amounts listed below were prepared and applied as in Example 1.
Grams 1 2 3 Compound Description Block Copolymer 130 200 140 Calcium carbonate 550 — 600 Hydrous aluminum — 400 — silicate Amorphous Polyolefin — 50 — Tackifiers 487 490 490 Plasticizer 970 900 1200 Antioxidant 6 7 7 Reinforcing Agent — 5 — Pigment 2 2 2 Physical Properties Dead Load 50 g on Pass Fail Pass Plywood - The peel strength of all compositions was then measured as in Example 1. The adhesive was applied to a 35 mils thick roofing underlayment.
Peel Strength - g/in - Roof Underlayment Composition Composition Composition Substrate 1 2 3 Plywood 1769 181 499 Rough oriented strand board 1043 181 499 (OSB) Smooth OSB 1360 227 635 Wood Fiberboard 680 136 363 Foil Faced Isocyanurate 1406 272 816 - While certain representative embodiments and details have been shown for purposes of illustrating the invention, it will be apparent those skilled in the art that various changes in the methods and apparatus disclosed herein may be made without departing from the scope of the invention, which is not to be considered limited to what is described in the specification.
Claims (39)
Priority Applications (1)
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US10/935,142 US8063141B2 (en) | 2002-04-11 | 2004-09-07 | Hot melt pressure sensitive adhesive composition for attaching roofing membranes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US10/120,751 US6794449B2 (en) | 2002-04-11 | 2002-04-11 | Hot melt pressure sensitive adhesive composition for attaching roofing membranes |
US10/935,142 US8063141B2 (en) | 2002-04-11 | 2004-09-07 | Hot melt pressure sensitive adhesive composition for attaching roofing membranes |
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US10/120,751 Continuation US6794449B2 (en) | 2002-04-11 | 2002-04-11 | Hot melt pressure sensitive adhesive composition for attaching roofing membranes |
US10/120,751 Continuation-In-Part US6794449B2 (en) | 2002-04-11 | 2002-04-11 | Hot melt pressure sensitive adhesive composition for attaching roofing membranes |
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US20050090615A1 true US20050090615A1 (en) | 2005-04-28 |
US8063141B2 US8063141B2 (en) | 2011-11-22 |
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US10/935,142 Expired - Fee Related US8063141B2 (en) | 2002-04-11 | 2004-09-07 | Hot melt pressure sensitive adhesive composition for attaching roofing membranes |
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US10/120,751 Expired - Lifetime US6794449B2 (en) | 2002-04-11 | 2002-04-11 | Hot melt pressure sensitive adhesive composition for attaching roofing membranes |
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US20090297760A1 (en) * | 2008-05-28 | 2009-12-03 | Q'so Incorporated | Method for Surface Coating for Improved Weatherability of Building Products |
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US8349444B2 (en) | 2007-03-21 | 2013-01-08 | Ashtech Industries, Llc | Utility materials incorporating a microparticle matrix |
US9076428B2 (en) | 2007-03-21 | 2015-07-07 | Ashtech Industries, Llc | Sound attenuation building material and system |
US8997924B2 (en) | 2007-03-21 | 2015-04-07 | Ashtech Industries, Llc | Utility materials incorporating a microparticle matrix |
US8445101B2 (en) | 2007-03-21 | 2013-05-21 | Ashtech Industries, Llc | Sound attenuation building material and system |
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US20100075092A1 (en) * | 2007-04-16 | 2010-03-25 | Eli Kendra | Radiation curable pressure sensitive adhesive roofing system |
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Also Published As
Publication number | Publication date |
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US6794449B2 (en) | 2004-09-21 |
US8063141B2 (en) | 2011-11-22 |
MXPA03002017A (en) | 2003-10-17 |
US20030195287A1 (en) | 2003-10-16 |
CA2418573C (en) | 2008-04-29 |
CA2418573A1 (en) | 2003-10-11 |
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